The Synthesis and Characterisation of a Free‐Base Porphyrin–Perylene Dyad that Exhibits Electronic Coupling in Both the Ground and Excited States |
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| Authors: | Simon Mathew Dr Martin R Johnston Dr |
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| Institution: | School of Chemistry, Physics and Earth Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001 (Australia), Fax: (+618)?8201‐2905 |
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| Abstract: | A covalent dyad composed of a free‐base porphyrin and a perylene diimide ( 1 ) was synthesised and characterised by NMR, HRMS, UV/Vis and fluorometric methods. UV/Vis spectrophotometric analysis indicated a moderate coupling between the components in the ground state. Fluorescence spectroscopy revealed that the emissive properties of the dyad showed that the quantum yield of emission from the porphyrin Soret band increased dramatically and could not be rationalised by a straightforward photoinduced energy (and/or electron) transfer, but rather a coupling of excited states. |
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| Keywords: | dyes/pigments energy conversion fluorescence porphyrinoids UV/Vis spectroscopy |
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